CVE-2026-111753 (GCVE-0-2026-111753)

Vulnerability from cvelistv5 – Published: 2026-11-05 20:25 – Updated: 2026-11-09 22:53
VLAI
Title
Angular: XSRF Token Leakage via URL Parsing Discrepancy in Angular HTTP Client (Incomplete fix for CVE-2025-66035)
Summary
Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 20.3.34 and 21.0.3, the @angular/common HttpClient function xsrfInterceptorFn uses a regular expression that does not normalize request URLs in the same way as the browser's WHATWG URL parser. With XSRF protection enabled, a mutating HTTP request to an attacker-controlled URL containing backslashes, stripped control characters or spaces, or removable ASCII whitespace can be misclassified as relative and same-origin, causing the interceptor to attach the X-XSRF-TOKEN header before the browser dispatches the request to a cross-origin host. With permissive CORS handling for the custom header, the attacker can obtain the victim's XSRF token and use it to perform cross-site request forgery against the victim session. This issue is fixed in versions 20.3.34 and 21.0.3.
Severity
5.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-09 22:52 UTC
CWE
  • CWE-201 - Insertion of Sensitive Information Into Sent Data
  • CWE-359 - Exposure of Private Personal Information to an Unauthorized Actor
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
angular angular Affected: <= 19.2.25
Affected: >= 20.0.0, < 20.3.34
Affected: >= 21.0.0, < 21.0.3
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